Manchester firefighters on Thursday morning were battling a three-alarm fire on Hanover Street.
Firefighters were continuing to pour water on an apartment building on the 300 block of Hanover Street.
The fire was reported just before 10 a.m. There were several people inside apartments at the time, officials said.
The first firefighters on the scene searched the building under heavy fire conditions.
Officials said they weren't sure of the exact number of people inside or whether everyone made it out.
One man said he saw the fire and rushed to help his neighbors, assisting in getting a wheelchair-bound resident out and waking up another who was sleeping.
That man, who asked to be identified only by his first name, "Eddie," said it didn't take long before it seemed that the flames were everywhere.
The Deputy Fire Marshal said officials are still in the process of trying to account for all the tenants, but it's difficult to know who was home at the time.
Tenants are saying the fire started inside the building, but officials said they don't know where the fire started at this point.
Smoke was visible over the Queen City as a result of the blaze.